Predicting the flow behavior of metals under different strain rate and temperature through phenomenological modeling

被引：36
作者：
Paul, Surajit Kumar [1 ]
机构：
[1] Tata Steel Ltd, R&D, Jamshedpur 831001, Bihar, India
来源：
COMPUTATIONAL MATERIALS SCIENCE | 2012年 / 65卷
关键词：
High strain rate; Phenomenological model; Crashworthiness; Flow stress; Temperature; WIDE-RANGE; CONSTITUTIVE RELATIONS; DYNAMIC-BEHAVIOR; SHEET METALS; DEFORMATION; STEEL;
D O I：
10.1016/j.commatsci.2012.06.039
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A phenomenological constitutive model is represented to describe the flow behavior of metals over wide ranges of strain rates and temperatures. The novelties of proposed elasto-plastic model are: (a) precisely can predict yield stress and flow curve shape in various strain rate as both yield stress and back stress are attached with different strain rate dependent functions, (b) ability to calculate the energy absorbed during crash event as it can track stress-strain behavior correctly beyond uniform elongation. Determination of eight material constants for proposed model from experimental data is very simple and straight forward. The model predictions show a very good agreement with experimental results obtained from the literatures for a wide range of strain rates and temperatures for different steels (mild steel ES, DP600 and TRIP700 steels). (c) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：91 / 99
页数：9
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